Controlling device

Abstract

A controlling device includes a controlling device main unit, a terminal block removably attached to the controlling device main unit, and a lock mechanism. The terminal block attached to the controlling device main unit is locked through the movement of a slide member provided with the controlling device main unit. The slide member includes a permanent magnet disposed in a specific position. The controlling device main unit includes a magnetism detecting portion that detects magnetism of the permanent magnet, located in a location in proximity to the permanent magnet, disposed in the slide member, in a state wherein terminal block is locked through movement of the slide member, and a lock status confirming portion that confirms whether or not the terminal block is in a locked state, based on a detection signal from the magnetism detecting portion indicating whether or not magnetism is present.

The invention claimed is: 
     
       1. A controlling device comprising:
 a controlling device main unit; 
 a terminal block that is attached removably to the controlling device main unit; and 
 a lock mechanism wherein the terminal block that is attached to the controlling device main unit is locked through movement of a slide member, wherein 
 the slide member includes
 a permanent magnet disposed in a specific position, and the controlling device main unit includes 
 a magnetism detecting portion that detects magnetism of the permanent magnet, located in a location in proximity to the permanent magnet, disposed in the slide member, in a state wherein terminal block is locked through the movement of the slide member, and 
 a lock status confirming portion that confirms whether or not the terminal block is in a locked state, based on a detection signal from the magnetism detecting portion indicating whether or not magnetism is present, wherein 
 
 the controlling device main unit includes a function stopping portion that stops a function for various types of signal processing with the terminal block in response to a confirmation result from the lock status confirming portion if a status wherein the terminal block is locked is not confirmed.